DC servo drive
Leadshine ELD3 Series Miniature DC Servo Drives
Palm-sized 24-70 VDC servo drives (76 x 50 x 33.5 mm) from 50 to 750 W in EtherCAT, CANopen and Modbus RTU versions, with STO, a second encoder input for full closed loop and support for slotless, brushed, voice-coil and linear motors.
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Key specifications
| Ingress protection | IP20 |
|---|---|
| Power | 50–750 W |
| Supply | 24-70 VDC (control 24 VDC +/-25%) |
| Feedback | Hall UVW + ABZ, RS485 serial encoder (Tamagawa), BiSS-C, 17-bit absolute magnetic, 2500 PPR incremental, Second encoder / linear scale |
| Fieldbus | EtherCAT, CANopen, Modbus RTU, Pulse, Analogue, USB-C tuning |
| Axes | 1 |
| Continuous current (max) | 20 A |
| Peak current (max) | 50 A |
| Safe torque off | SIL3 |
Series ranges as published; individual models vary. The full datasheet, drawings and CAD models are available on request.
Leadshine ELD3 Series Miniature DC Servo Drives replacement and alternative options
Use these supply-network options as a starting point for an engineering check. We can also help source the original Leadshine part. Published series figures do not establish an exact-model or drop-in replacement: confirm ratings, fit, interfaces and approvals for your application.
Kinco's fifth-generation low-voltage servo drive platform on 24-60 VDC, offered in pulse, CANopen and EtherCAT versions, with incremental, magnetic and absolute encoder support and a Type-C debug port.
| Published maximum | ELD3 Series Miniature DC Servo Drives | FD1 (FDxS) Series Low-Voltage DC Servo… |
|---|---|---|
| Continuous current | 20 A | 20 A meets or exceeds |
| Peak current | 50 A | — |
| Power | 750 W | 1,500 W meets or exceeds |
| Axes | 1 | 1 meets or exceeds |
Palm-sized Kinco 24-60 VDC drives at 5, 10 or 20 Arms for 50-750 W BLDC servo motors, with RS485, CANopen or EtherCAT, used heavily in AGVs.
| Published maximum | ELD3 Series Miniature DC Servo Drives | OD Series Mini DC Servo Drives (OD114S… |
|---|---|---|
| Continuous current | 20 A | 20 A meets or exceeds |
| Peak current | 50 A | — |
| Power | 750 W | 750 W meets or exceeds |
| Axes | 1 | 1 meets or exceeds |
The second-generation Kinco JD drive, paired with SMK motors from 50 W to 7.5 kW. It accepts a very wide range of encoder protocols plus a second encoder, runs CANopen or EtherCAT, and has STO SIL3 / PL e on every model.
| Published maximum | ELD3 Series Miniature DC Servo Drives | JD2 Series AC Servo Drives |
|---|---|---|
| Continuous current | 20 A | 26 A meets or exceeds |
| Peak current | 50 A | 65 A meets or exceeds |
| Power | 750 W | 7,500 W meets or exceeds |
| Axes | 1 | 1 meets or exceeds |
Figures are the highest published for each series and are not always measured the same way. A higher figure is not automatically a better choice: mounting, duty cycle, feedback, connectors and approvals matter too. An engineer will check the fit against your application before recommending anything.
Options
- Without housing (M) or with housing (H)
- Brake output (B)
- Gantry synchronisation
Typical applications
What a DC servo drive is
A DC servo drive controls a servo motor from a low-voltage DC supply, typically between about 12 and 100 V, such as a battery or a DC power supply. It uses a PWM power stage to regulate current in brushless or brushed motors, with current, velocity and position loops closed using encoder or Hall feedback. Many are compact, some palm-sized, with CANopen, EtherCAT, Modbus or pulse inputs. Higher current is needed for the same power than with mains drives.
When engineers choose a DC servo drive
Choose a DC servo drive for mobile robots, AGVs, battery equipment, medical devices and machines designed around safety extra low voltage. It allows simple distribution and safe access to live parts. The trade-offs are current and power: high currents need heavy cables and good connections, so power is typically limited to a few kilowatts. For mains-powered machines above that, an AC servo drive is usually more economical.
How to specify the Leadshine ELD3 Series Miniature DC Servo Drives
Send these with your enquiry and an engineer can confirm the right ELD3 Series Miniature DC Servo Drives variant:
- Supply voltage range (V DC)
- Continuous and peak current (A)
- Motor type: brushless, brushed, linear
- Feedback: encoder, Hall or absolute
- Interface: CANopen, EtherCAT, Modbus, pulse
- Safety functions and STO
- Size, mounting and cooling
Common mistakes to avoid
- Ignoring battery voltage swing from full to low charge
- Undersizing cables and connectors for high current
- Forgetting regenerative energy into the battery
- Overlooking grounding and EMC on low-voltage systems
Leadshine ELD3 Series Miniature DC Servo Drives: frequently asked questions
Can you help replace Leadshine ELD3 Series Miniature DC Servo Drives or source the original?
Send the full model code, quantity and required date. Our engineers can check original-part availability and assess suitable alternatives, including Motion Control Products options where appropriate. We confirm compatibility and any changes needed before recommending a replacement.
What is the Leadshine ELD3 Series Miniature DC Servo Drives?
Palm-sized 24-70 VDC servo drives (76 x 50 x 33.5 mm) from 50 to 750 W in EtherCAT, CANopen and Modbus RTU versions, with STO, a second encoder input for full closed loop and support for slotless, brushed, voice-coil and linear motors. Published series figures include power 50 W, power 750 W, axes 1, continuous current 20 A. It is available through our supply network, and our engineers can confirm the right variant for your application.
Who makes the Leadshine ELD3 Series Miniature DC Servo Drives?
The Leadshine ELD3 Series Miniature DC Servo Drives is made by Leadshine (Leadshine Technology) available through our supply network. Send us your requirement for pricing, lead time, datasheets and CAD.
What is the power of the Leadshine ELD3 Series Miniature DC Servo Drives?
The published series minimum power is 50 W. Individual models and sizes in the ELD3 Series Miniature DC Servo Drives range vary, so check the exact variant against your duty cycle, mounting and environment, or ask our engineers to confirm the right size for you.
Is there an alternative to the Leadshine ELD3 Series Miniature DC Servo Drives?
We can assess suitable replacement options. On published figures, Kinco FD1 (FDxS) Series Low-Voltage DC Servo Drives (FD114S-FD164S) and Kinco OD Series Mini DC Servo Drives (OD114S/124S/134S) are options to assess from our supply network. An engineer confirms the fit against your application before recommending anything.
Can a DC servo drive return energy to a battery?
Yes, during braking the motor regenerates energy into the DC bus, and with a battery it can be absorbed if the battery management system allows charging. Without a battery or with a full battery, voltage rises, so a braking resistor or clamp circuit may be needed. Check the drive's overvoltage threshold.
What size DC drive do I need?
Size the drive from the motor's continuous and peak current demands, the supply voltage range and the duty cycle. Allow margin above the motor's peak current and check how long the drive can deliver peak. Then confirm the interface and feedback types match the motor and controller.
Further reading: How to select a servo drive · How to select a pcb mount servo drive · Servo drives
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Engineer support
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Tell us what you need, whether it is this part, an equivalent or a complete axis built around it. An engineer will review your requirements and reply, normally within one working day.
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